Least limiting water range in soil under crop rotations and chiseling

performance of three models in predicting least limiting water range in soil

the range of the soil volumetric water content at which plant growth is least limited in relation to water potential, aeration, and mechanical resistance is the least limiting water range (llwr).experimentally, measurement of llwr is expensive and time consuming. using pedotransfer functions (ptfs) can facilitate its prediction. there are, however, contradictory information about the accuracy a...

Effects of compaction and cover crops on soil least limiting water range and air permeability

Crop rotations that include tap-rooted species of cover crops may help alleviate the deleterious effects of soil compaction on plant growth by modifying soil physical properties. We studied the effects of compaction and cover crops on the least limiting water range (LLWR) and air permeability in the surface layers of a loamy (Exp. 1) and a sandy soil (Exp. 2). There were three compaction treatm...

Soil physical quality of a Brazilian Oxisol under two tillage systems using the least limiting water range approach

Plant growth is directly affected by soil water, soil aeration, and soil resistance to root penetration. The least limiting water range (LLWR) is de®ned as the range in soil water content within which limitations to plant growth associated with water potential, aeration and soil resistance to root penetration are minimal. The LLWR has not been evaluated in tropical soils. Thus, the objective of...

evaluation of least limiting water range by vegetative and physiological parameters of pistachio, cv. sarakhsi, seedlings

continuous availability of soil water is an important factor for plant growth. both lack of adequate access to water in soils, or adequate oxygen in saturated soils, may reduce or even stop plant growth. to study the behavior of pistachio seedling at various moisture levels and to determine non-limiting water range for its growth, a greenhouse experiment with a completely randomized design was ...

Alternative crop rotations under Mediterranean no-tillage conditions: Biomass, grain yield and water-use efficiency